165860 has 12 divisors (see below), whose sum is σ = 348348. Its totient is φ = 66336.

The previous prime is 165857. The next prime is 165877. The reversal of 165860 is 68561.

165860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 47524 + 118336 = 218^2 + 344^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4127 + ... + 4166.

It is an arithmetic number, because the mean of its divisors is an integer number (29029).

2¹⁶⁵⁸⁶⁰ is an apocalyptic number.

165860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165860 is an abundant number, since it is smaller than the sum of its proper divisors (182488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165860 is a wasteful number, since it uses less digits than its factorization.

165860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8302 (or 8300 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 165860 is about 407.2591312666. The cubic root of 165860 is about 54.9431920335.

The spelling of 165860 in words is "one hundred sixty-five thousand, eight hundred sixty".